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KR200469499Y1 - Synchronized type double bed rtv system - Google Patents

Synchronized type double bed rtv system Download PDF

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KR200469499Y1
KR200469499Y1 KR2020110007852U KR20110007852U KR200469499Y1 KR 200469499 Y1 KR200469499 Y1 KR 200469499Y1 KR 2020110007852 U KR2020110007852 U KR 2020110007852U KR 20110007852 U KR20110007852 U KR 20110007852U KR 200469499 Y1 KR200469499 Y1 KR 200469499Y1
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김영범
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현대엘리베이터주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02—Storage devices
    • B65G1/04—Storage devices mechanical
    • B65G1/137—Storage devices mechanical with arrangements or automatic control means for selecting which articles are to be removed
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    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
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    • B65G1/04—Storage devices mechanical
    • B65G1/0407—Storage devices mechanical using stacker cranes
    • B65G1/0435—Storage devices mechanical using stacker cranes with pulling or pushing means on either stacking crane or stacking area
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
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Abstract

본 고안은 싱크로나이즈형 더블베드 RTV 시스템에 관한 것으로, 그 목적은 싱크로나이즈 형태로 운영되는 각각의 RTV에 2대의 피딩(Feeding) 장치를 적용하여 물동량 처리 능력을 향상시킴과 아울러 장비의 과부하 현상도 해결할 수 있도록 한 싱크로나이즈형 더블베드 RTV 시스템을 제공하기 위한 것이다.
이를 위해, 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템은, 입/출하동 및 스태커크레인 창고동 사이에 직선형태로 설치된 레일상에는 싱크로나이즈 형태로 한 쌍의 RTV 본체가 설치되어 소정 화물을 이재 및 적재 하면서 목적지로 이동시키도록 구성되되, 싱크로나이즈 형태로 운영되는 각각의 RTV 본체는 피딩수단이 두 개씩 구비되어 더블베드 타입으로 구성되며, 각 RTV 본체는 상위 제어 PC의 제어에 따라, 1Cycle에 2개의 화물이동 명령을 수행하도록 이루어진다.The present invention relates to a synchronized double bed RTV system. The purpose of the present invention is to apply two feeding devices to each RTV operated in a synchronized form to improve the throughput and solve the overload phenomenon of the equipment. To provide a synchronized double bed RTV system.
To this end, in the synchronized double bed RTV system according to the present invention, a pair of RTV main bodies are installed in a synchronized form on a rail installed in a straight line between the loading / unloading operation and the stacker crane warehouse, while transferring and loading a predetermined cargo. Each RTV main body, which is configured to move to a destination, is operated in a synchronized form, and is provided in double bed type with two feeding means, and each RTV main body is moved two cargoes in one cycle under the control of the upper control PC. It is made to carry out the command.

Description

싱크로나이즈형 더블베드 알티비 시스템{SYNCHRONIZED TYPE DOUBLE BED RTV SYSTEM}Synchronized double bed ALTV system {SYNCHRONIZED TYPE DOUBLE BED RTV SYSTEM}

본 고안은 싱크로나이즈형 더블베드 알티비 시스템에 관한 것으로, 보다 상세하게는 물류 자동화창고에서 화물의 입출고를 담당하는 각 알티비(RTV: Robotic Transfer Vehicle)를 더블베드 형태로 구성한 후 싱크로나이즈 방식으로 운영되도록 하므로서, 운영상의 유연성을 높임과 아울러 물동량 처리 능력도 크게 향상될 수 있도록 한 싱크로나이즈형 더블베드 알티비 시스템에 관한 것이다. The present invention relates to a synchronized double bed ALTV system, and more specifically, to configure the ALTV (RTV: Robotic Transfer Vehicle), which is responsible for loading and unloading cargo in an automated warehouse, to be operated in a synchronized manner. Thus, the present invention relates to a synchronized double bed ALTV system that can increase operational flexibility and greatly improve the throughput.

일반적으로, 물류 자동화창고에서 소정 화물의 입출고 시에는 RTV(Robotic Transfer Vehicle) 시스템이 적용되어 운영되고 있는데, 상기 RTV 시스템은 직선 형태의 레일 상에서 RTV가 왕복운동을 행하면서 입/출하동 및 스태커크레인 창고동 사이에서 화물의 이재 또는 적재작업을 수행하게 된다.      In general, RTV (Robotic Transfer Vehicle) system is applied and operated at the time of loading and unloading a certain cargo in the automated warehouse. The RTV system is a reciprocating motion of the RTV on a straight rail and the in / out and stacker cranes. Transfer or load of cargo is performed between warehouses.

이때, 상기 RTV 시스템은 상위 제어 PC로부터 목적지를 지령 받아 한 개의 RTV가 한 개의 화물에 대한 이재 또는 적재 작업을 수행하는 역할을 수행하게 되는데, 상술한 바와 같은 기존의 RTV 시스템은 높은 물동량을 요구하는 현장에서는 물동량 처리 능력이 현저히 떨어지게 되므로, 최근에는 본 출원인의 공개실용신안공보 제20-2010-0003963호에 기재된 바와 같이, 동일 레일에 2대의 RTV를 적용하여 2개의 화물이동 명령을 1Cycle에 수행하여 물동량 처리능력을 높인 싱크로나이즈 RTV 시스템이 적용되어 운영되고 있는 실정이다.      At this time, the RTV system receives a destination command from the upper control PC to perform the role of one RTV to carry out or load the cargo, the conventional RTV system as described above requires a high volume In the field, the capacity for handling of cargo is significantly reduced. Recently, as described in Korean Patent Application Publication No. 20-2010-0003963, the applicant applies two RTVs to the same rail to execute two cargo movement commands to 1Cycle. Synchronized RTV system with increased throughput capacity is being operated.

즉, 도 1에 도시된 바와 같이, 한 개의 베드를 갖는 RTV(100) 한 쌍이 상위 제어 PC로부터 목적지를 지령 받은 후, 입/출하동(300) 및 스태커크레인 창고동(400) 사이에서 레일(200)을 따라 주행하면서 화물의 이재 또는 적재 작업을 수행하게 된다.That is, as shown in Figure 1, after a pair of RTV (100) having a bed commanded the destination from the upper control PC, the rail (between the loading and unloading operation 300 and the stacker crane warehouse 400 While driving along the 200, the load or load operation of the cargo is performed.

이때, 각각의 RTV(100)는 상위 제어 PC로부터 지량 받은 순서에 따라 한 개의 화물만을 이동 시키게 된다.      At this time, each RTV 100 is to move only one cargo in the order received from the upper control PC.

즉, 한 개의 명령을 1Cycle에 수행하게 되는 것이다.      That is, one command is executed in 1Cycle.

그러나, 상술한 바와 같은 종래의 싱크로나이즈형 RTV 시스템 역시 물동량의 처리 능력에는 한계가 있게 되므로, 높은 물동량 처리를 요구하는 현장에는 적절하지 못한 문제점이 발생하게 되며, 또한 입/출고 스테이션이 많고 운영거리가 긴 자동창고에서는 사용 빈도가 높아 RTV 과부하의 우려가 있는 문제점도 발생하게 되었다. However, the conventional synchronizer type RTV system as described above also has a limitation in the processing capacity of the volume of traffic, which causes problems that are not appropriate in the field requiring high throughput, and also has a large number of entry / exit stations and an operating distance. In long automated warehouses, there is a problem that the use of RTV is overloaded due to the high frequency of use.

또, 상술한 바와 같은 종래의 RTV 시스템은 화물의 이동 명령마다 각각의 RTV가 한 개의 화물만을 처리하기 때문에 운영 방식의 유연성이 떨어지는 문제점도 발생하게 되었다.In addition, the conventional RTV system as described above has a problem in that the flexibility of the operating method is inferior because each RTV processes only one cargo per cargo movement command.

따라서, 본 고안은 상기한 바와 같은 종래의 문제점을 개선하기 위하여 안출되어진 것으로, 본 고안은 싱크로나이즈 형태로 운영되는 각각의 RTV에 2대의 피딩(Feeding) 장치를 적용하여 물동량 처리 능력을 향상시킴과 아울러 장비의 과부하 현상도 해결할 수 있도록 한 싱크로나이즈형 더블베드 RTV 시스템을 제공함에 그 목적이 있다.Therefore, the present invention was devised to improve the conventional problems as described above, and the present invention improves the processing capacity by applying two feeding devices to each RTV operated in a synchronized form. Its purpose is to provide a synchronized double bed RTV system that can overcome equipment overload.

상기한 바와 같은 목적을 달성하기 위한 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템은, 입/출하동 및 스태커크레인 창고동 사이에 직선형태로 설치된 레일상에는 싱크로나이즈 형태로 한 쌍의 RTV 본체가 설치되어 소정 화물을 이재 및 적재 하면서 목적지로 이동시키도록 구성되되, 싱크로나이즈 형태로 운영되는 각각의 RTV 본체는 피딩수단이 두 개씩 구비되어 더블베드 타입으로 구성되며, 각 RTV 본체는 상위 제어 PC의 제어에 따라, 1Cycle에 2개의 화물이동 명령을 수행하도록 이루어진 것을 특징으로 한다.      Synchronized type double bed RTV system according to the present invention for achieving the object as described above, a pair of RTV main body in a synchronized form is installed on the rail installed in a straight form between the entry / exit and stacker crane warehouse building It is configured to move to the destination while loading and loading the cargo, each RTV main body operated in the synchronized form is provided with two feeding means is composed of a double bed type, each RTV main body under the control of the upper control PC, It is characterized in that it is configured to perform two cargo movement commands in one cycle.

바람직하게, 상기 각 RTV 본체에는 피딩수단으로 두 개의 컨베이어가 동일선상에 배열되게 설치되어 구성되며, 각 컨베이어에는, 한 쌍의 화물이탈감지센서가 컨베이어 양측에 대응되게 구성됨과 아울러, 두 쌍씩의 화물감속센서 및 화물감지센서가 컨베이어 양측에 대응되게 구성되며, 각 RTV 본체에는, 충돌방지센서와 리모컨수신부 및 7-세그먼트 디스플레이, 위치 감지를 위한 레이저센서가 포함되어 구성된 것을 특징으로 한다.Preferably, each of the RTV main body is configured such that two conveyors are arranged on the same line as a feeding means, each of the conveyor, a pair of cargo departure detection sensor is configured to correspond to both sides of the conveyor, two pairs of cargo The deceleration sensor and the cargo detection sensor are configured to correspond to both sides of the conveyor, and each RTV main body is characterized in that the anti-collision sensor, a remote control receiver and a 7-segment display, and a laser sensor for position sensing.

더 바람직하게, 상기 각 RTV 본체에 구비되는 두 개의 컨베이어는 인버터(Inverter) 제어를 통하여 개별적 또는 동시적 제어가 가능한 것을 특징으로 한다.      More preferably, the two conveyors provided in each of the RTV main bodies may be individually or simultaneously controlled through inverter control.

상기에서 설명한 바와 같이 이루어진 본 고안에 따르면, 물류 자동화창고에서 화물의 입출고를 담당하는 RTV 시스템에서, 각 RTV 본체에 2대의 피딩 장치를 적용하여 더블베드 타입으로 구성한 후 싱크로나이즈 형태로 운영하므로서, 높은 물동량 처리 효과를 얻을 수가 있음은 물론, 화물 처리 운영방식에 있어 유연성을 갖을 수 있는 효과가 있게 된다.      According to the present invention made as described above, in the RTV system that is responsible for the loading and unloading of cargo in the automated warehouse, it is configured in a double bed type by applying two feeding devices to each RTV body, and operate in a synchronized form, high volume Not only can the treatment effect be obtained, but also the flexibility in the cargo handling operation.

또한, 기존의 RTV 시스템에 비해 1Cycle에 두 배 또는 4배의 화물을 처리할 수가 있게 되므로, 사용빈도가 저감되어 장비의 과부하를 줄이면서 장치의 사용 수명을 연장시킬 수 있는 효과도 있게 되는 것이다.      In addition, since it can handle twice or four times the cargo in 1Cycle compared to the existing RTV system, the frequency of use is reduced, thereby reducing the overload of the equipment and extend the service life of the device.

도 1은 종래의 싱크로나이즈형 RTV 시스템의 개략적인 구성을 나타내는 도면,
도 2는 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템의 개략적인 구성을 나타내는 도면,
도 3은 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템에 적용되는 RTV의 구성을 나타내는 평면도이다.1 is a view showing a schematic configuration of a conventional synchronized RTV system,
2 is a view showing a schematic configuration of a synchronized double bed RTV system according to the present invention;
3 is a plan view illustrating a configuration of an RTV applied to a synchronized double bed RTV system according to the present invention.

이하, 상기한 바와 같이 구성된 본 고안에 대해 도를 참조하여 상세히 설명한다.      Hereinafter, the present invention configured as described above will be described in detail with reference to the drawings.

도 2는 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템의 개략적인 구성을 나타내는 도면, 도 3은 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템에 적용되는 RTV의 구성을 나타내는 평면도이다.      2 is a view showing a schematic configuration of a synchronized double bed RTV system according to the present invention, Figure 3 is a plan view showing the configuration of an RTV applied to the synchronized double bed RTV system according to the present invention.

본 고안에 따른 싱크로나이즈형 더블베드 알티비(RTV: Robotic Transfer Vehicle) 시스템은, 물류 자동화창고에서 운영 효율을 높이기 위해 싱크로나이즈 형태로 운영되는 각각의 RTV 본체에 2대의 피딩(Feeding) 수단을 적용시켜 물동량 처리 능력을 극대화시킬 수 있도록 함에 따라 구현된다.      The synchronized double bed robotic transfer vehicle (RTV) system according to the present invention is applied to each RTV main body operated in the synchronized form to increase operational efficiency in a logistics automated warehouse. Implemented to maximize processing power.

주지된 바와 같이, RTV 시스템은 물류 자동화창고의 입/출하동(300) 및 스태커크레인 창고동(400) 사이의 바닥면에 직선형태로 설치된 레일(200)을 따라 RTV 본체(100)가 주행하면서, 상위 제어 PC로부터 목적지를 할당 받아 상기 입/출하동(300) 및 스태커크레인 창고동(400)으로부터의 해당 화물의 이재 또는 적재 작업을 수행하도록 구성된다.      As is well known, the RTV system, while the RTV main body 100 travels along the rails 200 installed in a straight line on the bottom surface between the loading / unloading movement 300 and the stacker crane warehouse 400 of the logistics automated warehouse. Receiving a destination from the upper control PC is configured to perform the transfer or loading operation of the corresponding cargo from the loading and unloading (300) and the stacker crane warehouse (400).

여기에서, 상기 입/출하동(300) 및 스태커크레인 창고동(400) 사이에 직선형태로 설치된 레일(200)을 한 쌍의 RTV 본체(100)가 상위 제어 PC의 제어에 따라 싱크로나이즈 형태로 주행하는 시스템에서, 본 고안에 따라 싱크로나이즈 형태를 이루는 각 RTV 본체(100)에는 두 개씩의 피딩수단이 구비되어, 1Cycle에 2개의 화물이동 명령을 수행하도록 구성된다.      Here, a pair of RTV main body 100 runs in a synchronized form according to the control of the upper control PC, the rail 200 installed in a straight line between the entry and exit movement 300 and the stacker crane warehouse 400. In the system, each RTV main body 100 having a synchronized form according to the present invention is provided with two feeding means, it is configured to perform two cargo movement commands to 1Cycle.

이때, 상기 각 RTV 본체(100)에는 각각의 구동모터(12)에 의해 동작되는 두 개의 컨베이어(10)가 동일선상에 배열된 상태로 설치되어 구성된다.At this time, each of the RTV main body 100 is configured to be installed in a state in which two conveyors 10 operated by the respective driving motor 12 arranged in the same line.

그리고, 각 RTV 본체(100)에 구비되는 각각의 컨베이어(10)에는 해당 컨베이어(10)에 이재 또는 적재되는 화물의 감지 및 감속, 이탈 등의 상태를 감지한 후 그 신호를 제어 PC 측으로 전송할 수 있도록 한 쌍의 화물이탈감지센서(20)와 두 쌍씩의 화물감속센서(40) 및 화물감지센서(30)가 해당 컨베이어(10) 양측에 상호 대응되게 구성된다.In addition, each conveyor 10 provided in each RTV main body 100 detects a state such as detecting, decelerating or deviating from a cargo carried or loaded on the conveyor 10, and then transmits a signal to the control PC. A pair of cargo departure detection sensor 20 and two pairs of cargo deceleration sensor 40 and cargo detection sensor 30 are configured to correspond to both sides of the conveyor 10 so as to correspond to each other.

또, 각각의 RTV 본체(100)에는, 싱크로나이즈 형태로 운영되는 한 쌍의 RTV의 충돌을 방지하기 위한 충돌방지센서(50)와, 리모컨신호를 수신하기 위한 리모컨수신부(60) 및, 소정 정보를 표시하기 위한 7-세그먼트 디스플레이(70) 등이 포함되어 구성되며, 그 이외에 레이저센서(80) 및 각종 컨트롤 박스 유니트(90) 등이 구비되어 구성된다.
In addition, each RTV main body 100 includes a collision prevention sensor 50 for preventing a collision of a pair of RTVs operated in a synchronized form, a remote control receiver 60 for receiving a remote control signal, and predetermined information. A seven-segment display 70 and the like for displaying are included. In addition, the laser sensor 80 and various control box units 90 are provided.

이어, 상기한 바와 같이 이루어진 본 고안의 작용에 대해 도를 참조하여 설명하면 다음과 같다.Next, the operation of the present invention as described above will be described with reference to the drawings.

본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템은, 각각 두 개의 컨베이어(10)로 이루어진 피딩수단을 갖춘 한 쌍의 RTV 본체(100)가 직선형태로 이루어진 레일(200) 상에 일정 간격을 갖도록 설치된다.In the synchronized double bed RTV system according to the present invention, a pair of RTV main bodies 100 each having a feeding means consisting of two conveyors 10 are installed at regular intervals on a rail 200 having a straight shape. .

상기 싱크로나이즈형 더블베드 RTV 시스템의 기본 조작 및 운영방식은 일반적인 직선형 RTV 시스템과 마찬가지로 상위 제어 PC로부터 각 RTV 본체(100)가 목적지를 할당 받아 화물의 이재 또는 적재 작업을 수행하게 된다.The basic operation and operation of the synchronized double bed RTV system is similar to a general straight RTV system, where each RTV main body 100 is assigned a destination from a higher-level control PC to perform transfer or loading of cargo.

이때, 싱크로나이즈 형태로 운영되는 각각의 RTV 본체(100)에는 한 쌍의 피딩수단이 구비되어 있음에 따라, 각각의 RTV 본체(100)가 1Cycle에 두 개의 화물을 처리할 수가 있게 된다.At this time, each RTV main body 100 operated in a synchronized form is provided with a pair of feeding means, so that each RTV main body 100 can process two cargoes in one cycle.

따라서, 본 고안에 따른 싱크로나이즈형 더블베드 RTV 시스템은 기존의 RTV 시스템과 비교하여 매우 높은 물동량 처리 효과를 얻을 수가 있음은 물론, 이에 따라 같은 양의 화물을 처리하더라도 시스템의 사용빈도가 크게 저감되면서 장비의 과부하를 줄일 수도 있게 된다.Therefore, the synchronized double bed RTV system according to the present invention can obtain a very high throughput compared to the conventional RTV system, and accordingly, even if the same amount of cargo is processed, the frequency of use of the system is greatly reduced. It can also reduce the overload.

또, 상기 각 RTV 본체(100)에 구비되는 두 개의 컨베이어(10)는 인버터(Inverter) 제어를 통하여 개별적 또는 동시적 제어가 가능하므로, 필요에 따라 1Cycle에 한 개의 화물만을 처리하는 원베드 타입(One bed type) RTV로도 운영이 가능하며, 이를 통해 화물처리방식의 유연성을 가져올 수도 있게 되는 것이다.In addition, since the two conveyors 10 provided in each of the RTV main bodies 100 can be individually or simultaneously controlled through an inverter control, a one-bed type which processes only one cargo in one cycle as needed. One bed type) It can also be operated as RTV, which can bring flexibility of cargo handling method.

한편, 본 고안에서 기재된 내용과 다른 변형된 실시 예들이 돌출 된다고 하더라도 본 고안의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안되며, 본 고안에 첨부된 청구범위 내에 속하게 됨은 물론이다.On the other hand, even if the modified embodiments other than the contents described in the present invention is not to be understood individually from the technical spirit or prospects of the present invention, it goes without saying that belongs to the claims attached to the present invention.

10: 컨베이어, 12: 구동모터,
20: 화물이탈감지센서, 30: 화물감지센서,
40: 화물감속센서, 50: 충돌방지센서,
60: 리모컨수신부, 70: 7-세그먼트 디스플레이,
80: 레이저센서, 90: 컨트롤 박스 유니트,
100: RTV 본체, 200: 레일.10: conveyor, 12: drive motor,
20: cargo departure detection sensor, 30: cargo detection sensor,
40: load reduction sensor, 50: collision avoidance sensor,
60: remote control receiver, 70: 7-segment display,
80: laser sensor, 90: control box unit,
100: RTV main body, 200: rail.

Claims (3)

입/출하동 및 스태커크레인 창고동 사이에 직선형태로 설치된 레일상에는 싱크로나이즈 형태로 한 쌍의 RTV 본체가 설치되어 소정 화물을 이재 및 적재 하면서 목적지로 이동시키도록 구성된 RTV 시스템에 있어서,
싱크로나이즈 형태로 운영되는 각각의 RTV 본체에는 피딩수단이 두 개씩 구비되어 더블베드 타입으로 구성되어, 각 RTV 본체는 상위 제어 PC의 제어에 따라, 1Cycle에 2개의 화물이동 명령을 수행하도록 이루어지되,
상기 각 RTV 본체의 피딩수단으로 두 개의 컨베이어가 외부 컨베이어와 동일선상에 배열되게 설치되어 구성되며,
각 컨베이어에는, 한 쌍의 화물이탈감지센서가 컨베이어 양측에 대응되게 구성됨과 아울러, 두 쌍씩의 화물감속센서 및 화물감지센서가 컨베이어 양측에 대응되게 구성되며,
각 RTV 본체에는, 충돌방지센서와 리모컨수신부 및 7-세그먼트 디스플레이, 레이저센서가 포함되어 구성되며,
상기 각 RTV 본체에 구비되는 두 개의 컨베이어는 하나의 인버터(Inverter) 제어를 통하여 개별적 또는 동시적 제어가 가능한 것을 특징으로 하는 싱크로나이즈형 더블베드 RTV 시스템.In a RTV system configured to move a pair of RTV main bodies in a synchronized form on a rail installed in a straight line between the loading / unloading operation and the stacker crane warehouse building to move to a destination while transferring and loading a predetermined cargo,
Each RTV main body operated in a synchronized form is provided with two feeding means, each configured as a double bed type, and each RTV main body is configured to execute two cargo movement commands to one cycle under the control of the upper control PC.
As the feeding means of each of the RTV main body, two conveyors are installed and arranged in line with the external conveyor,
In each conveyor, a pair of cargo departure detection sensors are configured to correspond to both sides of the conveyor, and two pairs of cargo reduction sensors and cargo detection sensors are configured to correspond to both sides of the conveyor.
Each RTV main body includes an anti-collision sensor, a remote control receiver, a 7-segment display, and a laser sensor.
Synchronized double bed RTV system, characterized in that the two conveyors provided in each of the RTV main body can be individually or simultaneously controlled through one inverter (Inverter) control. 삭제delete 삭제delete
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KR20090007880A (en) * 2007-07-16 2009-01-21 현대엘리베이터주식회사 Synchronize ALTIVY System
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